Observatory · observe first
Follow the allocation change
Matched S&P 500 members → sector → industry → sub-industry → company. Each step uses the same percentage points.
Historical time machine
Historical observation
20182026
1 · Sector
Weight and 12M allocation change
2 · Industry
Inside Utilities
3 · Sub-industry
Inside Electric Utilities
Electric Utilities · weight
0.72%
Industry change · 12M
-99.20 pp
Electric Utilities · contribution
-99.205 pp
Company participation
0%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Feb 2021 · sorted by absolute contribution to 12-month change
| Company | Country | Market cap | Universe weight | 3M contribution | 12M contribution | 12M price return | Above 6M weight average |
|---|---|---|---|---|---|---|---|
| Edison International → EIX | United States | $20.5bn | 0.041% | -0.058 pp | -99.883 pp | -15.8% | No |
| Duke Energy → DUK | United States | $65.8bn | 0.131% | -0.158 pp | +0.131 pp | -2.5% | No |
| Southern Company → SO | United States | $59.9bn | 0.120% | -0.149 pp | +0.120 pp | -1.8% | No |
| American Electric Power → AEP | United States | $37.2bn | 0.074% | -0.105 pp | +0.074 pp | -13.2% | No |
| Eversource Energy → ES | United States | $27.3bn | 0.054% | -0.073 pp | +0.054 pp | -5.6% | No |
| Public Service Enterprise Group → PEG | United States | $27.2bn | 0.054% | -0.071 pp | +0.054 pp | +8.8% | No |
| Exelon → EXC | United States | $26.9bn | 0.054% | -0.068 pp | +0.054 pp | -7.8% | No |
| WEC Energy Group → WEC | United States | $25.4bn | 0.051% | -0.076 pp | +0.051 pp | -10.1% | No |
| PPL Corporation → PPL | United States | $20.1bn | 0.040% | -0.053 pp | +0.040 pp | -7.7% | No |
| FirstEnergy → FE | United States | $18.0bn | 0.036% | -0.025 pp | +0.036 pp | -21.9% | No |
| Evergy → EVRG | United States | $12.2bn | 0.024% | -0.029 pp | +0.024 pp | -15.0% | No |
| Alliant Energy → LNT | United States | $11.5bn | 0.023% | -0.033 pp | +0.023 pp | -8.8% | No |
| Entergy → ETR | United States | $8.7bn | 0.017% | -0.029 pp | +0.017 pp | -22.9% | No |
Company contributions use weights among matched S&P 500 members and add through each level without rescaling. Companies without matched shares and prices are omitted. These observations do not establish official index weights or actual fund flows.